It is a descriptive term used to alert fellow gentlemen of an imidiate sighting or a recent encounter of a highly attractive female specimen or simply beautiful girl.

This term is broad and can be interpreted in many ways.

This term is is used generally in public and unknown to women so fellow gentleman can speak the term in public without the target being aware.

This term does not apply to sluts, milfs, etc.
Hey boys "10-4"
by FDez March 18, 2014
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a example in which whilst playing halo or halo-2 or any other first person shooter its when u melee some one in the face u scream of yell 10-4
by rony February 15, 2006
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elite verison of Ok boomer but seems better :P
older person: yoo i remember this song, it's soo nostalgic

person: 10-4 dinosaur
by EvilTrivago February 18, 2020
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4-10-4 is a term to describe a female who within the general public is a "4-out-of-10". But within a subculture scarce of women, she is a "10-out-of-10". Only to go back into the general public and be a '4' again. This is usually used within a military or paramilitary environment where women are scarce. However, this can be used in any male-dominant subculture ie: Gaming, fighting, constructions, cosplay, your pokemon card gatherings, faggot!
Bob: Have you seen our new sergeant Christine? She is so sexy!
Gary: Nah, dude she is busted! A traditional 4 10 4
by AR0438 January 1, 2017
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In the CB slanguage:

1. Hi there!

2. Enthusiastic agreement.
1. I just wanted to say a big 10-4 to ya!

2. That's a big 10-4!
by Downstrike May 29, 2004
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The rule in rugby union (section 10, paragraph 4, part k) that lets a referee penalise "unsportsmanlike behaviour", which is handy if you have nfi why you just blew the whistle. From the players' point of view, it's a bit dodge because it gives the ref the power to blow anything. It is perhaps this frequent blowing that has led to speculation that all referees are gay.
If i had the power i would 10, 4, k the shit out of george bush for being a moron.
by stop_____hammertime May 19, 2007
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Common trucker term used to confirm agreement

"sounds good " "definitely"
Jim:be at the truck stop in ten
Rick:that's a Texas 10-4
by Ck94 February 6, 2017
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